Smart sensors can open a window into the environment. In this week's Naked Scientists Podcast we find out how networks of sensors around Heathrow airport can study how planes alter the atmosphere, and how a similar network can monitor an Oxfordshire floodplain. Plus, we find out how the tools of a surgeon are helping to keep jet engines in flying form. In the news, we hear how gut bugs promote blood vessel growth, why fresh fruit and veg gives you a healthy hue and how scientists are analysing antimatter with microwaves... Like this podcast? Please help us by supporting the Naked Scientists